Typewriting machine



Dec. 9, 1941.

W. A GABRIELSON TYPEWRITING MACHINE Filed June 24, 1940 INVENTOR lV/7/1'0/77 /4. Gab/"khan ATTORN EY Patented Dec. 9, 1941 UNETED NTosslcs TYPEWRITING MACHINE Application June 24, 1940,- Serial No.341,995

7 Claims.

The invention relates to improvements in typewriting machines and moreparticularly to the tabulating mechanism of such machines.

The principal object of the invention is to provide for a typewritingmachine an improved tabulating mechanism of the key-set type which is ofsimple and inexpensive construction.

Other objects are to provide in a key-set tabulating mechanism settablecolumn stops of simplified and improved construction, to provide animproved mounting for said stops, and an improved assembly of thesettable stops and a stop carrying bar.

A further object of the invention is to improve and simplify the key settabulating mechanism disclosed in U. S. Patent No. 2,099,011, issuedNovember 16, 1937, to Carl Gabrielson et al.

To the foregoing and other ends which will hereinafter appear, theinvention consists of the improved devices, features of construction,and arrangements and combinations of parts and devices hereinafterparticularly described and particularly pointed out in the appendedclaims.

In the accompanying drawing illustrating the preferred embodiment of theinvention:

Fig. 1 is a fragmentary vertical longitudinal I sectional view of theimproved machine taken on the line l-l of Fig. 2;

Fig. 2 is a fragmentary transverse sectional view of the machine takenapproximately on the r- 0 e Fig. 6 1s a detail view showing, in endelevatlon,

part of the right hand end of the platen carriage; and

Fig. 7 is a detail transverse sectional View of the column stop bar andpivot wire on an enlarged scale.

The invention has been shown embodied in an L. C. Smith typewritingmachine having a tabulating mechanism constructed as shown in the patentabove referred to except as said mechanismis modified by the presentimprovements. Only so much of the known machine as is necessary for aclear understanding of the present invention has been shown and will bedescribed.

The platen carriage [0 of the machine has the;

usual roller platen H journalled therein and is mounted. as usual on themain framework I2 of the machineto travel back and forth transversely ofthe machine and is letter spaced from right to left under control of theusual carriage escapement mechanism (not shown). The carriage I0 isreleasable from control of the carriage escapement mechanism by theusual escapement releasing or carriage releasing mechanism (notshown)for tabulating jump or running movement of the carriage from. right toleft. Fixedly held to the carriage adjacent opposite ends of thecarriage are two brackets l3 which rigidly support the opposite ends ofa column stop carrying bar M which extends horizontally transversely ofthe machine, said stop bar being fixedly held at each of its ends to theadjacent bracket I3 by a screw I5.

The parts heretofore described are constructed as described in the priorpatent above mentioned. The improvements made by the present inventioninthe tabulating mechanism of the machine of said prior patent will nowbe described.

The column stop carrying bar I4 is of oblong cross-section and is heldto the brackets IS. with its two wider faces disposed in superposedhorizontal planes. This bar is lotted inward from top to bottom thereofalong both its front and rear edges at letter space intervals to providea row of column stop guiding and spacing slots l6 along the front edgeof the bar and a row of column stop guiding and spacing slots I! alongthe rear edge of the bar.. Each slot I6 is directly opposite a differentone of the slots I! and the slots of each row are spaced a letter spaceapart. there being one slot I6 and an opposed slot I! for each letterspace position of the platen carriage.

Settable column stops l8 of novel construction, one for each letterspace position of the carriage, are rockably mounted on the stop bar l4,certain of the stops [8 being omitted from the drawings for clarity ofillustration. These novel stops have also a novel mounting on the barand a novel coaction with the bar to maintain their mounting thereon andto arrest and detain each stop in either of two positions relatively tothe bar, one position being the operative or set position of the stopand the other being the inoperative unset or cleared position of thestop.

The improved stops are pivotally held to a straight pivot wire l9 whichin the improved construction is insertible in and removable from a.groove 20 which extends longitudinally of the stop bar l4 and is formedin the front vertical edge face of the bar. In the improved stop bar thegroove 20 surrounds not more than half the circumference of the pivotwire and preferably (as shown) less than half of the circumference ofthe wire, so that the wire may be moved transversely of the wire orfore-and-aft of the machine bodily for disengaging the wire from andengaging it in the groove. Ready engagement of the pivot wire'with thebar and disengagement of the wire from the bar is thus provided for andalso the expense of cutting an undercut wireholding groove of key-holecross-section is avoided. The depth of groove 20 transversely of the barI4 is substantially less than that of slots I6. 7 i

The improved stops are adapted to hold the pivot wire in the groove 20as hereinafter explained, and each of the improved stops consists of asingle piece of sheet metal. The stops are so formed as to be readilystamped in quantity by inexpensive dies from a sheet of metal which isslightly resilient or springy, and each stop is so formed as to beslightly resilient or springy edgewise of the stop. The improved stopsare adapted as hereinafter described to hold themselves and the pivotwire I9 assembled with the stop bar for setting and unsetting of thestops and to prevent accidental disconnection of any stop and of thepivot wire from the bar, while permitting ready assembly of the wire andstops with the bar and disassembly of the stops and wire from the bar.The improved springy onepiece sheet metal stops include integral partsthereofv which are, coactive with the stop bar as hereinafter explainedto arrest pivotal movement of'each stop in a set or operative positionand in an, un-set or inoperative cleared position as well as to preventaccidental disassembly of the stops and pivot wire from the bar. Theimproved stops also are formed with integral means coactive with auniversal stop unsetting or clearing device and with integral meanscoactive with a device for individually setting and unsetting the stops,which devices may be, and preferably are, identical with the devices forsaid purposes provided in the machine of the prior patent above referredto. The improved stops are also provided with integral means coactivewhen the stops. are set with asuitable stop on the machine vframe, whichframe carried stop may be, and preferably is, identical with the framestop of the. machine of said prior patent and is similarly controlled. 1

Each of the improved one-piece sheet metal stops I8 is constructed asfollows in the preferred embodiment shown in the drawings. Each stopconsists of a substantially straight arm having at one end a cylindricalpivot aperture through which the pivot wire [9 extends, and of anarcuate arm or sector arm integral with the straight arm and extendingfrom the other end of-said straight arm through an arc of slightly ,morethan "90 degrees, the center of which arc is substantially coincidentwith the center of the pivot aperture in the straight arm of the stop.

65 versal stop restoring or unsetting means pro- When the stopsareassembled on the stop bar the straight arm of each stop extends upwardlyin At its outer edge the arcuate arm of each stop .70, rock .shaft 3Ijournalled in brackets I3 on the I8 is formed with three outwardlyextending integral teeth or projections or lugs 2|, 22 and 23 projectingfrom said arm edge substantially radially; of the pivotal axis of thestop. At its .inner edge the arcuate arm of each stop I8 is formed withtwo integral inwardly extending than projections 24 and 25.

45 from the bar.

projections or lugs 24 and 25 spaced apart a substantially greaterdistance than the vertical thickness of stop bar I4 and engageablerespectively with the upper and lower faces of the solid unslottedmedial portion of the stop bar to limit the extent of the pivotalsetting and unsetting movements of the stop. Projections 25 of the stopsI8 also cooperate with the stop bar to prevent accidental disconnectionof the stops and 10 wire I9 from the bar I4. At its inner edge thearcuate arm of each stop I8 is formed with an inwardly extending stoplatching projection or lug 28 located intermediate the projections 24and 25 and extending inward a lesser distance a cam projection or humphaving a rounded or arcuate edge for engagement with the stop bar I4 ashereinafter more fully described.

When a stop I8 is rocked about its pivot wire I9 from its inactive unsetor cleared position of Figs. 1, 2, 3, 5 and 6, to its active or setposition of Fig. 4, the projection 24 abuts the top face of stop bar I4to arrest the stop in set position, and hump or projection 28 isyieldingly forced down past the upper corner or edge of the bar at theinner end or root of the slot I1 and, when the stop is arrested byprojection 24, said hump presses resiliently against the inner verticalsurface of bar I4 at the root of the slot to releasa- 30 bly. hold orlatch the stop against accidental movement from set position. When astop I8 is rocked about its pivot wire I9 from set position to unset orcleared position, the projection 25 abuts the under face of the stop barto arrest the stop in unset position, and hump or projection 28overhangs the upper face of the bar I4 and yielding presses thereagainstat the upper end of the root of slot I! to releasably latch or hold thestop in unset or cleared position.

Each stop I8 is inherently resiliently springy vertical plane extendingfore-and-aft of the machine, each stop being so guided by a pair-ofslots I6II the side walls of which firmly hold the stop against sidewisemovement transversely of the machine. By pushing rearwardly on theprojections 25 of the set of stops I8 to slightly resiliently expand thestops edgewise and then swinging the stops about the pivot wire I9 untilthe lower ends of the arcuate arms of the stops are moved upward clearof the stop bar I4, the

co entire set of stops I8 and the pivot wire I9 will become disengagedas a unit from the stop bar.

All of the stops I8 which are in set position .at any one time may besimultaneously unset or restored to inactive cleared position by aunivided on the platen carriage. The means shown in the drawing for thispurpose is the same as that disclosed in the prior patent abovementioned, and need be only briefly described. A

and 2- of all stops I8. A spring 33, coiled about The projection 28 is ashaft 3| and engaged with fin '32 and with a projection 34 on one"bracket |3,normally urges the fin rearward to and holds it in theposition shown in th drawing. On the right hand end of shaft 3| is fixeda sector :gear 35 the teeth of which mesh with those of the sector .geararm of a two-arm key lever 35 the other arm of which lever is formedwith a key .31. Key lever '36 is pivoted to the adjacent carriagebracket z|3 at 38 to rock up and down and is provided with a stop 39normally engaged over a stop 40 on said bracket, as shown in Fig. 6.Upon depression of key 31 the fin 32 will swing forward and unset allset stops by pressure of the fin .on projections 2| of said set stops,and upon release of said key said fin will return to normal position.

Projections 2| and 22 of each stop are spaced apart along the arcuatearm of :the stop to permit the stop to be'swung from :unset-to setposition or vice-versa with the fin in normal position without collisionof said projections with the fin when the latter is in normal position.The stops may thus be individually set and unset by the individualstop-setting and unsetting means disclosed in the prior patent and shownin part in the drawing illustrating the present invention. So much ofsaid means as is necessary to an understanding of the present inventionis shown and will be briefly described.

:Said last-mentioned means comprises the stopsetter and unsetter 4|-43rockable by key-applied force either to the position shown in Fig. 4 orto the position shown in Fig. 5 from the normal idle intermediateposition of said setter and unsetter shown in Figs. 1, 2 and3 andautomatically returned to said last-mentioned position from either ofthe first two mentioned positions upon release of the key-applied force.The setter and unsetter comprises a yoke 4| having its two legs pivotedat their rear ends on a fixed pin 42, one leg of said yoke being formedwith a stop setting and unsetting finger 43. Pin 42 extends horizontallytransversely of the machine and is fixed in the main frame l2 of themachine above andbehind the stop bar l4.

The key-controlled means for so shifting the stop setter and unsetterfrom and restoring it to idle position includes a verticallyreciprocable link 45 connected at 44 to the right hand leg of yoke 4|,and a vertically reciprocable link 53 connected to link 45 by across-pin or cross-rod .54 rigid with both links. Shifting of the linkdevice 4553-54 upward by key-applied force from a normal positionthereof to which it is automatically restored upon release of key forcerocks the stop setter and unsetter from normal position to that of Fig.5 to unset a single set stop l8 aligned with the finger 43, the fingerthrusting against projection 22 of said stop .to

unset the .stop. Shifting of the link device down ward by key-appliedforce from its normal idle position to which it is restored upon releaseof the applied key force rocks the stop setter and unsetter from normalidle position to that of Fig. 4 to set a single stop I8 aligned withfinger 43, the finger thrusting'against projection 23 of the stop to setthe stop. Restoration of the rigid link device 45-5354 to normalposition restores the stop setter and unsetter to normal position.

The finger 43 of the device 4|43, which swings the stops individuallyabout their pivotal axis to set or unset a single selected stop at atime, extends forwardly from the yoke 4| and is located substantially inthe medial vertical longitudinal plane of the machine. The thickness offinger 43 transversely of the machine is substantially equal to that ofeach column stop t8 and in each letter space position of travel of thecarriage a different one of the stops I8 is located in the same verticalfore-and-aft plane through the machine in which the finger '43 lies. Thefinger projects in between the projections .22 and'23 of any stopmaligned therewith. The spacing apart of the two projections 22 and 23of each stop is such that during travel of the carriage, while the stopsetter and unsetter is in idle or neutral position, the projections 22of all stops Hi will pass above the finger 43 and the projections 23 ofall stops It will .pass below finger 43 whether the stops be set orunset. The spacing apart of the projections 22 and 23 of each stop I8 isalso such that, when .said stop is registered with finger 43, downwardswinging of the finger from idle position will set that stop by thrustof the finger on projection 23 and upward swinging of the finger fromidle position will unset the stop by thrust of the finger againstprojection 22, but return movement of the finger to idle position willnot shift the stop.

The projections 23 of the column stops l8 also serve as abutmentelements of said stops for-coaction with a suitable settable counterstop 86 on the machine frame in tabulating operations. The counter stopshown and the means for setting it correspond to those disclosed in theprior patent above-mentioned. This counter'stop '88 .is locatedsubstantially midway the sides of the machine and is guided at its upperend adjacent the stop bar It in a fore and-aft extending slot 8-! in apart of the main frame l2. Suitablekeycontrolled means as set out insaid prior patent .are provided for releasing the carriage for atabulating jump from right to left and shifting the counter stop from anormal idle position of said stop shown in Figs. 1, 2 and 5 to an activeposition shown in Fig. 4.

When counter stop 85 is in idle position stops t8 will freely pass it.When counter stop 86 is in active position all unset ones of the stopsl8 will pass it but no set stop will pass it. The projections 23 of setstops will collide sidewise with the active counter stop in successivetabulating jumps or runs of the carriage. The projection 23 of each setstop is substantially directly behind and close to the stop bar so thatit will be firmly supported laterally by the side walls of slot in whichthe set stop is engaged.

What I claim is:

A typewriting machine having a tabulating mechanism comprising a columnstop carrying bar provided with a longitudinal groove, a pivot wire fora series of column stops, and a series of column stops engaged with saidwire for setting and upsetting rocking movements about said wire andreleasably engaged with the bar to re- 'leasahly hold sa d wire andstops in assembled relation with the bar, said wire being movablelaterally thereof into and out of said groove and releasahly retained inthe groove by the en agement of the series of stops with the bar andwire, said stops being resiliently expansible to free the stops and wirefrom the bar.

2. In a typewriting machine, the combination of a column stop barprovided at each of two opposite edges thereof with a row of inwardlyextending slots, a set of resiliently expansible onepiece column stops,each stop having portions engaged in one slot of each row of slots, anda pivot wire for the set of stops extending across all the slots of oneof said rows of slots, said bar' having in that edge thereof providedwith said last-mentioned row of slots a longitudinally for setting andunsetting the stops, said stops being resiliently expansible to free thestopsand wire from the bar.

3. In a typewriting or like machine, a tabulating mechanism comprising acolumn stop bar, an edgewisely resilient one-piece rockable column stophaving opposite ends separated to straddle the bar, and a stop pivotwith which said stop is engaged at one of said ends for rocking of vthestop relatively to the bar, said bar having an open seat for said pivotin which said pivot is releasably heldby the stop, the stop adjacent itsother end resiliently bearing edgewise of the stop against the bar, saidstop bar having a slot in which the said other end of the stop isengaged, and said stop having projections engageable with the bar tolimit rocking of the stop in opposite directions relatively to the barto set and unset the stop, said stop being resiliently expansibleedgewise to release the stop and its pivot from the bar;

4. In a typewriting or like machine, the combination of a main frame, aplaten carriage mounted on the main frame to travel transversely of themachine, a column stop bar mounted on the carriage and extendingtransversely of the machine, said bar having along each of two oppo-siteedges thereof a row of slots extending inwardly transversely of the bar,said bar having a channel in one of said edges intersecting the slots insaid edge, a set of one-piece sheet metal column stops straddling said'bar, and a pivot wire for said stops removably seated in said channeland intersecting the slots in the channeled edge of the bar, one end ofeach column stop being pivotally engaged with said wire and engaged in aslot of the adjacent row of slots, the other end of each stop passingthrough a slot of the other row of slots, each stop being provided witha pair of spaced apart integral projections adjacent said other endengageable with opposite faces of the bar to limit setting and unsettingV rocking movements of the stop about the pivot wire and with anintegral cam hump intermediatesaid projections coactive with the bar toreleasably latch the stop in either set or unset position, each of saidstops being open between its opposite ends and resiliently springy topermit spreading of its ends apart in assembling the stop in straddledrelation with the bar and to release the stops and the pivot wire fromthe bar, and each stop normally resiliently pressing in substantiallyopposite directions against the pivot wire and against the bar.

5. In a key set tabulating mechanism, a rockably settable and unsettablecolumn stop formed of a single piece of sheetmetal inherently springyand resiliently expansible, said stop having spaced apart ends one ofwhich is formed with a pivot bearing to engage a pivot wire for a set ofsuch stops, said stop'being shaped between its ends to straddle a columnstop bar and being resiliently expansible between its ends forattachment to and detachment from the column stop bar, and resilientlycontractible to exertsub+ stantially opposed pressures on its pivot wireand therbar while assembled on the bar in bar straddling position, saidstop having integral projections for coaction with stop setting andunsetting means, oneof which projections also constitutes an abutmentfor coaction with a counter stop, and said stop also having a pair ofintegral projections for engagement with said bar to limit rockingsetting and unsetting movements of the stop relatively to the bar. 7

' 6.In a key set tabulating mechanism, a onepiece sheet metal columnstop rockably settable and unsettable consisting of a straight arm andan arcuate arm extending from one end of the straight arm, the other endof the straight arm being formed with a pivot bearing for engagementwith a pivot Wire, the arcuate arm being curved substantially about thesaid pivot bearing as a center and the stop being inherently resilientfor separating and approaching movementsbetween the pivot bearing end ofthe straight arm and the free end of the arcuate arm, 'the arcuate armhaving outwardly extending projections at its outer edge for engagementby stop setting and unsetting means and having at its inner edgeprojections for engagement with a stop carrying bar to limit setting andunsetting rocking movements of the stop about the pivotal axis of thestop, and an integral bearing part adapted to engage the stop carryingbar to releasably hold thestop in set or unset position, said bearingpart being on the inner edge of the arcuate arm between the twoprojections adapted to engage the stop carrying bar.

7. A typewriting machine having a tabulating mechanism of the key-settype including a set of column stops, one stop for each letter spaceposition of the carriage and each stop rockably mounted on astop-carrying bar for movement from set to unset position, wherein eachcolumn stop is formed of a single piece of sheet metal, and has an armprovided at one end with a pivot bearing, and an arcuate arm forengagement with a counter stop and extending from the other end of thepivot-bearing arm in an arc substantially concentric with the pivotbearing of the stop, the said two arms of each stop being otherwisedisconnected and adapted to straddle the stop-carrying bar, and the stopbeing inherently edgewisely'resiliently expansible and contractiblebetween its sends for attachment to and detachment from thestop-carryingbar and to exert

